Revolver-cylinder lock



Dec. 2, 1924- 1,518,027

^ u. vosMEK REVOLVER CYLINDER LOCK Filed April 6, 1925 fw; A A. www I/wmek Patented Dec. Z, 1924.

UNETED STATES ULRICH VOSMEK, OF ANTIGO, WISCONSIN.

REVOLVER-CYLINDER LOCK.

Application led April 6, 1923. Serial No. 630,303.

To aZZ who/m, t may concern:

Be it known that I, ULRICH Vosiinn, a citizen of the United States of America, residing at Antigo, in the county of Langlade, and State of Visconsin, have invented certain new and useful improvements in Revolver-Cylinder Locks, of which the following is a specification.

This invention relates to certain new and l0 useful improvements in revolver cylinder locks and has for its primary object the provision of a lock device for positively holding a revolver cylinder in its closed operative position within the frame of the revolver.

A further object of the invention is to provide a cylinder lock for revolvers wherein cooperating lock devices for retaining the cylinder in its operat-ive. position within the revolver frame are 4carried by the revolver frame and yoke arms supporting the cylinder, the cooperating lock devices positioned forwardly of the cylinder being entirely independently operablewith respect to the usual rearwardly positioned cylinder retaining devices. y

A further object of the invention is to lprovide a lock for revolver cylinders that is associated with the crane that carries the .30 cylinder for holding the crane rigidly positioned against the revolver frame to main- Y tain proper alinement of the cylinder with the barrel.

Viththe above and other objects in view as the nature of the invention 'is better understood, the same consists of the novel forni, combination and arrangement of parts hereinafter more fully described, shown in the accompanying drawing and claimed.

In the drawing, wherein like. reference characters designate corresponding' parts throughout the several views,

Figure l shows by dotted lines, a frag- 5 inentary side elevational view of a. revolver 'ments, such as shifting movement of the centering pin for the cylinder and the lateral throw of the cylinder to permit ejection of the cartridges causes unusual wear on these parts with the result that the cartridge chambers in the cylinder do not properly aline with the b-arrel bore and causes stripping of the bullet with a loss of accuracy of shooting.

The present invention particularly residing in the provision of a lock for retaining the cylinder properly positioned within the frame of the revolver embodies cooperating lock devices associated withv the revolver frame and crane that rotatably supports the cylinder, the revolver being of the conventional `type as illustrated b-y dotted lines in Fig. 1 and including a handle l, frame 2 and a barrel 3, the cartridge chamber or cylinder 4 being of the laterally displaceable type and confined within an opening in the frame when in its operative position.

The support for the cylinder 4 includes a crane 5 havinga substantially cylindrical bearing 6 at vthe lower end thereof that is pivotally confined' within the curved pocket 7 formed in one side of the frame 2. The

rupper end'of the crane 5 carries a head 8 that is're'ceived in a pocket 9 provided in the adjacent face of the frame 2, as clearly shown in Fig. 2, an ejector rod 10 being rotatable and Islidable inthe crane head S and splined through a central bore in the cylinder 4 in the usual manner with the ejector fingers at the inner end thereof, The usual sliding latch l1 is associated with the rear end of the cylinder 4 to form a'y bearing for the cylinder and to retain the same in its operative position.

The gist of the present invention resides in the pro-vision of an additional lock device for the forward end of the cylinder 4, or the crane 5 supporting the cylinder, and to accommodate the mounting of the lock Cil device, the revolver frame 2 and the crane 5 adjacent the upper ends thereof are provided with transverse registering openings 12 and 13 respectively, shown more clearly in Fig. 2, a latch arm 14 having a bea-ring end 15 provided with a. bearing opening 16 as shown in Fig. 4 has the bearing end 15 pivotally mounted upon the pin 17 within the frame opening 12. To retain the latch arm 14 at its limit of upward movement to assume a locked position, the lower side thereof is provided with a socket 18 that receives one end of a coil spring 19 with the other end of the coil spring engaging the bottom wall of the opening 12 as illustrated.

When the crane 5 is in the closed position shown in Fig. 2, the forward end 2O of the latch arm projects through the opening 13 in the crane, the forward end of the latch arm being provided with an upwa fdly directed shoulder 21 that engages the outer face of the crane above the opening 13 to retain the crane and cylinder in their closed position.

A tensioned pin 22 engages the lower side of the latch arm 14 adjacent the outer end thereof for further holding the saine in locking engagement with the crane 5, the Ipin 22 being slidable in the longitudinal bore 23 formed in the crane 5, the lower end of the bore opening into the frame pocket 7 while the upper yend of the bore-is in communication with `the frame opening 13, the pin 22 `having one side thereof cutaway toprovide a groove 24 through which a cross pin 25 extends while the pin is engaged by a coil spring 2G positioned in the crane bore 23 in the manner shown in Fig. 2. To facilitate the shifting of the latch arm 14 to its released position to permit swinging movement of the crane 5 for lateral displacement of the cylinder, the outer edge of the end of the latch arm is serrated as at 27 as shown. in Figs. 2 and 4.

From the above detail description of the device, it believed that the construction and loperation thereof will at once be apparent, it being noted that by the provision of the tensioned latch arm 14 for association with the crane 5 that supports the revolver cylinder, the latte-r is properly maintained in its operative posit-ion with the opening of the revolver 'frame with the gseveral cartridge bores of the cylinder successively "properly alined with the bore of the barrel,

- and the outer end 2O of the lever arm 14 depressed against the tension of the two springs 19'and 26 permitting the crane 5 t0 swing upon its lower bearing end (5 within the frame pocket 7 with the cylinder laterally displaced from the frame opening. The cylinder will be permitted to be returned to its operative position by the inner edge of the crane opening 13 engaging the outer edge of the latch arm 14 to depress the same against the tension of the two springs associated therewith and when. the crane has reached its proper position as shown inv Fig. 2, the springs automatically elevate the latch arm for so retaining the same.

ll/Thile there is herein shown and described the preferred embodiment of the present invention, it is nevertheless to be understood that ininor changes may be made therein without departing from the spirit and scope of the invention as claimed.

What is claimed as 4new is l. In a revolver cylinder lock, a frame, a crane pivotally supported on the frame and rotatably supporting a cylinder, a tensioned latch arm pivotally supported in the -frame and having a lug at the free end thereof, and said era-ne having an opening through which the latch arm is `projected with the latch arm lug engaging a wall of the opening to retain the crane in locking position, the tension means for the latch arm including a tensioned pin carried 'by `the crane and extending into the crane opening to engage rthe latch yarm to retain the latch arm lug in its locked position.

2. In a revolver cylinder lock, a frame, a cra-ne pivotally supportedv on the frame and rotatably supporting a cylinder, a tensioned latch arm pivotally supported in the frame and havino'v a lug at the free end thereof, said crane having-an opening through which the latch arm is projected with the latch arm ylug engaging a wall of the opening to retain the crane in locked position, the tension means for the latch arm including a spring interposed bet veen the frame and latch arm and a tensioned `piu carried bythe crane and extending into the crane opening to engage the latch arm to retain the latch. arm lug in its locked position.

3. In a revolver cylinder lock, a frame, a crane pivotallyv supported on the frame and rotatably supporting a. cylinder, a tensioned latch arm pivotally supported in the traine and having a :lug at `the free end thereof, and said crane having au opening through which the latch arm is ilnojected with the latch arm lugengaging a wall of the opening tto retain the crane in locked position, said tensioned means for the latch arin including a pin positioned within a bore formed in said crane, a spring in said bore `below said pin for forcing the latter into the crane opening to engage the latch arm to retain the latch arm lug in its locked position, and means carried by sait crane for limiting the movement of said pin into crane opening.

dl. In a revolver cylinder look, a frame, a crane pivotally supported in the frame and rotatably supporting a cylinder, a tensioned latch arm pivotally support-ed in the frame and having a lug at the free end thereof, said crane having an opening through which the latch arm is projected With the latch arm lug engaging a wall of the opening to retain the crane in locked position, the tensioned means for the latch arm including a pin having a groove formed in the side thereof positioned Within a bore formed in said crane, a spring in said bore below said pin for forcing the latter into the crane opening to engage the latch arm for retaining the latch arm lug in its looked position, and a cross pin Carried by said crane traversing the bore formed therein and received Within the groove formed in the spring pressed pin for limiting the movement of 20 the latter into the crane opening.

In testimony whereof I aiX my signature.

ULRICH VOSMEK. 

